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Old 04-26-2011, 07:08 PM   #1 (permalink)
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Whats the best jets for my 2150 on my 258?

What is the best jet size for the 2150 motorcraft on a 258 with hei ignition? Seems to be running rich and have a little lag off of idle...
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Old 04-26-2011, 07:30 PM   #2 (permalink)
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I run #46 jets in my 2100 on my 258 in my 87 yj. M also running the 1.21 venturing not the 1.08.... runs like a top and passes emissions fine in RI.
Thanks,
Mike...
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Old 04-27-2011, 11:25 AM   #3 (permalink)
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Originally Posted by biggin82 View Post
What is the best jet size for the 2150 motorcraft on a 258 with hei ignition? Seems to be running rich and have a little lag off of idle...
I have a 2100 with a 1.08 venturi on my 258. I am currently running #47 jets and have great drivability and running. When I was reading up on the swap, #47 jets and a 1.08 venturi were mentioned as the best combination for a 258.
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Old 04-27-2011, 04:24 PM   #4 (permalink)
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Originally Posted by Xtremeyj420 View Post
I run #46 jets in my 2100 on my 258 in my 87 yj. M also running the 1.21 venturing not the 1.08.... runs like a top and passes emissions fine in RI.
Thanks,
Mike...
Thanks! Mine also has the 1.21 venturi.
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